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Y (No Model.) Y R.A W. NEWTON.

PIRE BXTINGUISHER.

No.A 514,160. Patented Feb. 6,1894. Fi?. l Y .Fig-.2.

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PATENT FFICE@ vROBERT W. NEWTON, OF PROVIDENCE, RHODE ISLAND.

FIRE-EXTINGUISHER.

SPECIFICATION forming part of Letters Patent No. 514,160, dated February 6, 1894.

Application led December 29, 1892. Serial No. 456,638. (No model.)

To @ZZ whom it may concern.-

Beit known that I, ROBERT W. NEWTON, of

Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Fire-Extinl guishers; and I hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specip cation.

This invention has reference to improvements in automatic tire-extinguishers, known in the arts as automatic-sprinklers,this invention being an improvement on the devices shown, described and claimed in the United States Letters Patent No. 47 8,809, granted to this applicant July 12, 1892, as well as applicants EnglishPatent No. 12,826, of 1892, and the pending application for United States patent, Serial No. 430,493, to which reference is made.

The object of the invention is to produce an automatic tire-extinguisher which will be extremely sensitive to changes of temperature.

Another object of the linvention is to secure a more perfectly uniform distribution of Water. l

Another object of the invention is to provide a thrust-block, for automatic-sprinklers, in which the resistance to the circulation of air-currents will bereduced toa minimum.

Still another object of -the invention is to reduce the thickness of metal which is adjacent to the solder-joint without decreasing the strength of these part-s.

Still further the object of the invention is to providean improved valve-disk which is adapted to more securely engage the upper end of the thrust-block and to contain a spring on which the thrust-block bears.

The invention consists in the peculiar construction of the thrust-block and valve-disk and their combination with an automaticsprinkler.

The invention further consists in such other novel features of construction and combination of parts as will hereinafter be more fully described and pointed out in the claims.

Figure 1 represents a front viewrof the irnproved extinguisher. Fig. 2 represents a vertical sectional view yof the same. Fig. 3 represents a view of the valve-disk removed from the sprinkler, Fig. 4 being a similar view of the thrust-block, and Fig. 5 a view of the spring. Fig. 6 represents a cross-sectional viewr of the Vdeiector removed from the sprinkler.

Similar numbers of reference designate corresponding parts throughout.

In carrying my invention into practice I form a tire-extinguisher of which 5 is the nozzle having the screw-thread 6 and the annular valve-seat 7. The enlarged portion 8 formed in part with the nozzle may have faceted edges, or projections, to facilitate the turning of the same when the screw-thread 6 is entered in a threaded-socket, depending from the enlargement 8 is a yoke 9, the arms of which curve inward near their lower ends and terminate in the perforated-hub 10. The screw-threaded thrust-pin 11 extends through the perforation in the hub l0 and has a rounded upper end and a faceted lower end. It is furnished with a lock-nut 12 for locking the same when adjusted to the required position. The thrust-block is formed of thin metal and has a base-plate 13 supported by and secured to the hollow-bracket 14, the cross-piece of which is slightly concaved to fit the rounded end of the thrustpin 1l. To the upper surface of the baseplate 13 are soldered the side-plates 15-15 and the lower rounded edges of the thrustarms 16-16, the upper ends of these arms being inclined inward and resting against each other,-the solder, used in securing the base 13, the plates 15, and the arms 16 together, is of a nature which will become fusible at a comparatively low temperature; the thrust-block thus formed entirely of thin metal does not obstruct the movement of aircurrents and, when the temperature of these currents rises above the normal point, the soldered-portions of the block are quickly affected thereby. The valve-disk 17 is adapted to tightly close over the valve-seat 4, and in its under surface is provided with the transverse-slot 18 and the concavities 19-19, the bent-spring 20 being contained Within the slot 18 and supported in place by the upper ends of the thrust-arms which ente'r the concavities 19,-a double spring is herein shown, but a single spring may be used if found desirable.

It is evident that, while the temperature surrounding the sprinkler remains at the normal point, the valve-disk will remain pressed IOO against the valve-seat, the spring 19 tending to reduce any sudden jar on the solder-joints from water pound, dac., and that, when the solder which secures the side-plates to the base-plate 13 becomes fused, the lower ends of the thrust-arms, or struts, will slide apart, the valve-disk will drop down and all the parts between the end and the thrust-pin 11 and the valve-seat 7 will fall away leaving an unobstructed passage for the water to pass to the deflector 2l and be thence distributed in a spray-like form.

The deflector is stamped out of a dat piece of sheet-metal with the two rows of perforations, a and b, it is now drawn up by a suitable die into the cup-shape shown in Fig. 6, so that the lower row of holes have their outer lower edge at or nearly at the lower part of the curve. By thus elongating the holes in the vertical direction, the outer length of the holes 'is slightly longer than the inner, the streams spread more quickly than when the holes are of uniform diameter or area, and the lower row of holes discharges a portion of the water more nearly on a line with the dischargingstream from the nozzle.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a fire-extinguisher, a thrust-block adapted to support the valve-disk in place, consisting of a base-plate, a hollow-bracket or bridge secured to the under surface thereof, and inwardly-inclined thrust-arms or struts the bases of which are also secured to the upper surface of the base-plate.

2. In a fire-extinguisher having a valve-seat and a valve for closing the same, the combination with a thrust-block consisting of a basel plate supported on ahollow-bracket or bridge, and separable thrust-arms supported on the base-plate and secured by solder, of an adjustable thrust-pin for adjusting the pressure on the thrust-block, as described.

3. The combination with the valve-seat of a fire-extinguisher, a valve-disk 17 having the transverse-slot 18 and depressions 19-19, and a spring 20 partially contained within said slot, of an adjustable thrust-block adapted to bear against the spring and inclined thrustarms supported by the block and arranged to partially enter the depressions 19-19, as described.

4. The combination with the nozzle 5 having the valve-seat 7 and the enlargement 8,a yoke depending from the enlargement and having.,r the perforated-hub 10, and a thrustpin carrying the deflector 21 adjustable in said hub, of the valve-disk I7 provided with the spring 20, and a thrust-block consisting of the arms 16, the base-plate 13, the sideplates 15 and the hollow-bracket 14, secured together and interposed between the valvedisk and the upper end of the thrust-pin, as and for the purpose described.

In witness whereof I have hereunto set my hand.

ROBERT W. NEWTON.

Witnesses:

HENRY J. MILLER, M. F. BLIGH. 

